DOI: 10.1016/j.atmosenv.2014.12.006
Scopus记录号: 2-s2.0-84918778460
论文题名: Source apportionment of atmospheric PAHs and their toxicity using PMF: Impact of gas/particle partitioning
作者: Gao B ; , Wang X ; -M ; , Zhao X ; -Y ; , Ding X ; , Fu X ; -X ; , Zhang Y ; -L ; , He Q ; -F ; , Zhang Z ; , Liu T ; -Y ; , Huang Z ; -Z ; , Chen L ; -G ; , Peng Y ; , Guo H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 114
结束页码: 120
语种: 英语
英文关键词: PAHs
; Partitioning
; PM2.5
; Source apportionment
; Toxicity
Scopus关键词: Coal combustion
; Risk perception
; Toxicity
; Gas-phase concentration
; Gas/particle partitioning
; PAHs
; Particle phase concentrations
; Partitioning
; Polycyclic aromatic hydrocarbons (PAHS)
; Positive Matrix Factorization
; Source apportionment
; Polycyclic aromatic hydrocarbons
; chrysene
; coal
; fluoranthene
; levoglucosan
; polycyclic aromatic hydrocarbon
; biomass burning
; cancer
; carcinogen
; combustion
; concentration (composition)
; data set
; gas phase reaction
; PAH
; partitioning
; sampling
; subtropical region
; temporal analysis
; toxicity
; tracer
; traffic emission
; Article
; biomass
; cancer risk
; carcinogenicity
; combustion
; gas
; mathematical model
; particulate matter
; positive matrix factorization model
; toxicity
; China
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: 24-hPM2.5 samples were simultaneously collected at six sites in a subtropical city of South China during November-December, 2009. Particle-phase concentrations of polycyclic aromatic hydrocarbons (PAHs) and organic tracers such as hopanes for vehicular emissions (VE), levoglucosan for biomass burning (BB) and picene for coal combustion (CC) were determined. Meanwhile, their gas-phase concentrations were calculated from gas/particle (G/P) partitioning theory using the particle-phase concentrations. The 4 ring PAHs (fluoranthene to chrysene) had lower particle-phase fractions (10%-79%) than other species. Estimated BaPeq and lifetime cancer risk for particle-only (P-only) vs gas+particle (G+P) data sets showed similar values, indicating PAHs with 5-7 rings dominated the carcinogenicity of PAHs. Positive Matrix Factorization (PMF) was applied on both P-only and G+P data sets to estimate the source contributions to PAHs and their toxicity. Three common sources were identified: VE, BB and CC, with CC as the most significant source for both particulate (58%) and total (G+P, 40%) PAHs. While CC exhibited consistent contributions to BaPeq for P-only (66%) vs G+P (62%) solutions, VE and BB contributions were under- and overestimated by 68% and 47%, respectively by the P-only solution, as compared to the G+P solution. The results provide an insight on the impact of G/P partitioning on the source apportionment of PAHs and their toxicity. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81997
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, China; Guangzhou Environmental Monitoring Center, Guangzhou, China; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, China; Air Quality Studies, Department Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong
Recommended Citation:
Gao B,, Wang X,-M,et al. Source apportionment of atmospheric PAHs and their toxicity using PMF: Impact of gas/particle partitioning[J]. Atmospheric Environment,2015-01-01,103